A German Shepherd, Golden Retriever, Rottweiler and other large dogs should have large houses, while the Chihuahua and smaller breeds will need smaller houses. The door of the house does not need to be based on the height of the dog from the ground to the top of its head, or even taller, as it will lower its head to be able to enter the house. The width of the door should be just enough to accommodate the dog. These height and width measurements can be adjusted if there is a physical requirement to do so. The house should also be large enough for the dog to stand at full height inside, move around and lie down. Owners should remember that a larger-than-needed home will compromise the dog’s retention of body heat during the winter or colder months.